The NFL world was stunned Saturday night when the news of Andrew Luck's retirement came down.

Below is a selection of the outpouring of support and congratulations for the Colts quarterback:

Every time i think about it, Tears start to flow ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½. No one understands you like i do. Our bond is one of a kind. Iâve decided to dedicate my season to my BEST FRIEND. I Love You 12. #Luck2Hiltonpic.twitter.com/9a3JzxNum2

Much love to my fellow Texas brother. Stiil remember our time together as Heisman finalists and how we laughed about almost being teammates at Stanford. The decision was only yours to make and Iâm glad you have found peace in it. Respect https://t.co/4MQzsyZ9hz

Letâs show respect & take our hats off for Andrew Luck. We donât know what heâs going through. Heâs confident & at peace about his decision. Congratulations on a helluva career my guy. #FlipPhone Luv!

An incredible competitor and a truly great person. Iâll miss competing against a guy who always played the game extremely hard, with an immense amount of respect. Wishing Andrew nothing but the absolute best moving forward. I know this had to be unbelievably difficult decision. pic.twitter.com/jgMHwJvPxo